气候变化领域集成服务门户(CCPortal): Soil moisture conditions alter behavior of entomopathogenic nematodes

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DOI	10.1002/jsfa.13326
	Soil moisture conditions alter behavior of entomopathogenic nematodes
	Frankenstein, Dana; Luu, Macawan S.; Luna-Ayala, Jennifer; Willett, Denis S.; Filgueiras, Camila S.
发表日期	2024
ISSN	0022-5142
EISSN	1097-0010
起始页码	104
结束页码	7
卷号	104 期号:7
英文摘要	BACKGROUNDA variety of environmental factors can disrupt biotic interactions between plants, insects and soil microorganisms with consequences for agricultural management and production. Many of these belowground interactions are mediated by volatile organic compounds (VOCs) which can be used for communication under appropriate environmental conditions. Behavioral responses to these compounds may likewise be dependent on varying soil conditions which are influenced by a changing climate. To determine how changing environmental conditions may affect VOC-mediated biotic interactions, we used a belowground system where entomopathogenic nematodes (EPNs) - tiny roundworm parasitoids of soil-borne insects - respond to VOCs by moving through the soil pore matrix. Specifically, we used two genera of EPNs - Heterorhabditis and Steinernema - that are known to respond to four specific terpenes - alpha-pinene, linalool, d-limonene and pregeijerene - released by the roots of plants in the presence of herbivores. We assessed the response of these nematodes to these terpenes under three moisture regimes to determine whether drier conditions or inundated conditions may influence the response behavior of these nematodes.RESULTSOur results illustrate that the recovery rate of EPNs is positively associated with soil moisture concentration. As soil moisture concentration increases from 6% to 18%, substantially more nematodes are recovered from bioassays. In addition, we find that soil moisture influences EPN preference for VOCs, as illustrated in the variable response rates. Certain compounds shifted from acting as a repellent to acting as an attractant and vice versa depending on the soil moisture concentration.CONCLUSIONOn a broad scale, we demonstrate that soil moisture has a significant effect on EPN host-seeking behavior. EPN efficacy as biological control agents could be affected by climate change projections that predict varying soil moisture concentrations. We recommend that maintaining nematodes as biological control agents is essential for sustainable agriculture development, as they significantly contribute not only to soil health but also to efficient pest management. (c) 2024 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
英文关键词	parasitic nematodes; host-seeking behavior; biological control; integrated pest management; belowground behavior; sustainable agriculture
语种	英语
WOS研究方向	Agriculture ; Chemistry ; Food Science & Technology
WOS类目	Agriculture, Multidisciplinary ; Chemistry, Applied ; Food Science & Technology
WOS记录号	WOS:001157228900001
来源期刊	JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/304075
作者单位	University of Tennessee System; University of Tennessee Knoxville; University System of Maryland; University of Maryland Baltimore County; University of North Carolina; University of North Carolina - Asheville; North Carolina State University
推荐引用方式 GB/T 7714	Frankenstein, Dana,Luu, Macawan S.,Luna-Ayala, Jennifer,et al. Soil moisture conditions alter behavior of entomopathogenic nematodes[J],2024,104(7).
APA	Frankenstein, Dana,Luu, Macawan S.,Luna-Ayala, Jennifer,Willett, Denis S.,&Filgueiras, Camila S..(2024).Soil moisture conditions alter behavior of entomopathogenic nematodes.JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE,104(7).
MLA	Frankenstein, Dana,et al."Soil moisture conditions alter behavior of entomopathogenic nematodes".JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 104.7(2024).